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Oak Tree Growth #464273

Asked June 21, 2018, 2:29 PM EDT

Any idea what this is growing out of an oak tree?

Isabella County Michigan

Expert Response

This is a wool sower gall caused by the wool sower gall wasp. A good guy. :). Enjoy!

Thank you for your question! Rebecca Finneran Michigan State University Extension Senior Horticulture Educator Learn how t be a Smart Gardener here www.migarden.msu.edu Replied June 21, 2018, 7:33 PM EDT

This work is supported in part by New Technologies for Ag Extension grant no. 2020-41595-30123 from the USDA National Institute of Food and Agriculture. Any opinions, findings, conclusions, or recommendations expressed in this publication are those of the author(s) and do not necessarily reflect the view of the U.S. Department of Agriculture.

Oak Tree Growth #464273

Expert Response

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